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西藏然乌湖口高位地质灾害变形特征分析

赵志男 李滨 高杨 赵超英 刘晓杰 王猛

赵志男, 李滨, 高杨, 赵超英, 刘晓杰, 王猛. 2021: 西藏然乌湖口高位地质灾害变形特征分析. 中国地质灾害与防治学报, 32(3): 25-32. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-04
引用本文: 赵志男, 李滨, 高杨, 赵超英, 刘晓杰, 王猛. 2021: 西藏然乌湖口高位地质灾害变形特征分析. 中国地质灾害与防治学报, 32(3): 25-32. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-04
Zhinan ZHAO, Bin LI, Yang GAO, Chaoying ZHAO, Xiaojie LIU, Meng WANG. 2021: Analysis on deformation characteristics of geological hazards in Ranwu Lake Estuary. The Chinese Journal of Geological Hazard and Control, 32(3): 25-32. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-04
Citation: Zhinan ZHAO, Bin LI, Yang GAO, Chaoying ZHAO, Xiaojie LIU, Meng WANG. 2021: Analysis on deformation characteristics of geological hazards in Ranwu Lake Estuary. The Chinese Journal of Geological Hazard and Control, 32(3): 25-32. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-04

西藏然乌湖口高位地质灾害变形特征分析

doi: 10.16031/j.cnki.issn.1003-8035.2021.03-04
基金项目: 中国地质调查局地质调查项目(DD20211540);西藏自治区自然资源厅项目(藏财采【2020】0546)
详细信息
    作者简介:

    赵志男(1997-),男,山东德州人,硕士研究生,主要从事地质灾害研究。E-mail:1184107787@qq.com

    通讯作者:

    李 滨(1980-),男,山东滨州人,博士,研究员,主要从事地质灾害研究。E-mail:libin1102@163.com

  • 中图分类号: P642

Analysis on deformation characteristics of geological hazards in Ranwu Lake Estuary

  • 摘要: 青藏高原持续隆升使得其周缘地带地质灾害频发,复杂的地质背景,造就了帕隆藏布流域链式灾害发育、堵江致灾风险高的特点。近年来,地处帕隆藏布流域的然乌湖口地质灾害变形强烈,本文通过光学遥感与InSAR监测技术,对然乌湖口82道班沟内进行风险物源识别,解译出研究区共存在高位冰崩、崩塌、冰碛物、崩滑体4种风险物源类型,针对各风险物源的遥感解译数据进行特征分析,综合然乌湖流域内的地质背景,阐述风险物源的致灾因素及成灾模式。结合InSAR监测结果,将然乌湖口右岸斜坡体及上部解译风险物源区划分为82道班、迫隆与哑隆三个高风险区,并依据变形监测结果进行形变特征分析。
  • 图  1  然乌湖口泥石流沟三维影像图

    Figure  1.  Three dimensional image of Ranwu Lake Estuary debris flow gully

    图  2  然乌湖口地质灾害遥感解译图

    Figure  2.  Remote sensing interpretation map of geological hazards in Ranwu Lake Estuary

    图  3  然乌湖口主沟剖面图

    Figure  3.  Profile of main ditch at Ranwu Lake Estuary

    图  4  B02高位崩塌影像图

    Figure  4.  B02 high level collapse image

    图  5  B14高位崩塌影像图

    Figure  5.  B14 high level collapse image

    图  6  BQ01冰碛物光学遥感影像

    Figure  6.  Optical remote sensing image of BQ01 moraine

    图  7  BQ01冰碛物前缘滑塌体

    Figure  7.  BQ01 front collapse of moraine

    图  8  BQ02冰碛物光学遥感影像

    Figure  8.  Optical remote sensing image of BQ02 moraine

    图  9  安目错冰川2017年5月—2020年8月年平均形变速率图

    Figure  9.  Annual average shape rate of Anmucuo glacier from May 2017 to August 2020

    图  10  P1至P8点2017年5月—2020年8月时间序列形变

    Figure  10.  P1 to P8 time series deformation from May 2017 to August 2020

    表  1  82道班流域分区基本信息

    Table  1.   Basic information of 82 road class

    分区名称面积/km2主沟长/m平均纵比降/‰
    形成区9.134 507217.50
    流通区0.491 684377.62
    堆积区0.03652764.61
    下载: 导出CSV

    表  2  帕隆藏布卫星数据信息

    Table  2.   Data information of Palongzangbu satellite

    光学卫星数据源覆盖率/%数据时间云覆盖雪覆盖
    Landsat-81002017-11-20—2020-11-20<1%<5%
    资源一号30.032020-01-14—2020-11-10<1%<5%
    资源三号94.302016-11-10—2020-11-12<1%<5%
    高分一号1002014-11-29—2020-11-14<1%<5%
    高分二号53.472015-09-30—2020-11-15<1%<5%
    高分六号90.512019-03-29—2020-11-20<1%<5%
    高分七号17.312020-04-13—2020-11-11<1%<5%
    TH0117.962019-01-02—2019-01-11<1%<5%
    珠海一号77.992018-12-09—2020-03-31<1%<5%
    下载: 导出CSV

    表  3  然乌湖口地质灾害光学遥感数据

    Table  3.   Optical remote sensing data of geological hazards in Ranwu Lake Estuary

    序号时间数据来源分辨率/m备注
    1早期雅虎影像2.0融合数据
    2近期Google地球1.0融合数据
    32020-10-29无人机影像0.15泥石流中下段
    下载: 导出CSV

    表  4  然乌湖口高位冰崩物源统计表

    Table  4.   Statistics of high-level ice debris sources in Ranwu Lake Estuary

    编号面积/m2前缘
    高程/m
    后缘
    高程/m
    前后缘
    高差/m
    距沟口
    高差/m
    BC01117 185.754 9295 2963671 369
    BC0264 032.7285 0465 1651191 238
    BC0346 066.9554 9955 094991 167
    BC0436 014.7785 1595 2811221 354
    BC0527 004.2825 0355 2512161 324
    BC0655 548.6665 1705 235651 308
    下载: 导出CSV

    表  5  然乌湖口高位崩塌、冰碛物统计表

    Table  5.   Statistics of high level collapses and moraines in Ranwu Lake Estuary

    编号物源类型与分布面积/m2
    B01崩塌堆积/34 007
    崩源区92 675
    B02崩塌堆积/117 392
    崩源区308 142
    B03崩塌堆积/860
    崩源区13 099
    B04崩塌堆积/1 823
    崩源区50 223
    B05崩塌堆积/6 749
    崩源区238 141
    B06崩塌堆积/5 458
    崩源区251 888
    B07崩塌堆积/37 214
    崩源区99 637
    B08崩塌堆积/7 554
    崩源区51 521
    B09崩塌堆积/31 383
    崩源区101 061
    B10崩塌堆积/10 777
    崩源区67 932
    B11崩塌堆积/39 192
    崩源区210 429
    B12崩塌堆积/32 823
    崩源区39 066
    B13崩塌堆积/14 445
    崩源区19 994
    B14崩塌堆积/131 017
    崩源区714 128
    B15崩塌堆积/77 610
    崩源区177 990
    B16崩塌堆积/79 078
    崩源区311 705
    B17崩塌堆积/12 208
    崩源区153 766
    BQ01冰碛物2 416 559
    BQ02冰碛物406 753
    下载: 导出CSV

    表  6  然乌湖口崩滑物源统计表

    Table  6.   Statistics of avalanche source in Ranwu Lake Estuary

    编号面积/m2
    BH011 015
    BH02467
    BH032 052
    BH04352
    BH05596
    BH06839
    BH07378
    BH08507
    BH09731
    BH103 858
    BH11460
    BH121 465
    BH132 001
    下载: 导出CSV
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  • 收稿日期:  2021-05-21
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